name: EMOTIA CI/CD Pipeline

on:
  push:
    branches: [ main, develop ]
  pull_request:
    branches: [ main ]
  release:
    types: [ published ]

env:
  REGISTRY: ghcr.io
  BACKEND_IMAGE: ${{ github.repository }}/backend
  FRONTEND_IMAGE: ${{ github.repository }}/frontend

jobs:
  # Code Quality Checks
  quality-check:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v3

    - name: Set up Python
      uses: actions/setup-python@v4
      with:
        python-version: '3.9'

    - name: Install dependencies
      run: |
        python -m pip install --upgrade pip
        pip install -r requirements.txt
        pip install -r requirements-dev.txt

    - name: Run linting
      run: |
        flake8 models/ scripts/ backend/
        black --check models/ scripts/ backend/

    - name: Run type checking
      run: mypy models/ scripts/ backend/

    - name: Run security scan
      run: |
        pip install safety
        safety check

  # Backend Tests
  backend-test:
    runs-on: ubuntu-latest
    needs: quality-check
    services:
      redis:
        image: redis:7-alpine
        ports:
          - 6379:6379
        options: >-
          --health-cmd "redis-cli ping"
          --health-interval 10s
          --health-timeout 5s
          --health-retries 5

    steps:
    - uses: actions/checkout@v3

    - name: Set up Python
      uses: actions/setup-python@v4
      with:
        python-version: '3.9'

    - name: Install dependencies
      run: |
        python -m pip install --upgrade pip
        pip install -r requirements.txt
        pip install -r requirements-dev.txt

    - name: Run backend tests
      run: |
        cd backend
        python -m pytest --cov=. --cov-report=xml --cov-report=html
      env:
        REDIS_URL: redis://localhost:6379

    - name: Upload coverage reports
      uses: codecov/codecov-action@v3
      with:
        file: ./backend/coverage.xml
        flags: backend
        name: backend-coverage

  # Model Tests
  model-test:
    runs-on: ubuntu-latest
    needs: quality-check
    steps:
    - uses: actions/checkout@v3

    - name: Set up Python
      uses: actions/setup-python@v4
      with:
        python-version: '3.9'

    - name: Install PyTorch
      run: |
        pip install torch torchvision torchaudio --index-url https://download.pytorch.org/whl/cpu

    - name: Install model dependencies
      run: |
        pip install -r requirements.txt
        pip install transformers datasets

    - name: Run model tests
      run: |
        python -m pytest models/ scripts/ -v --tb=short
        python scripts/train.py --test-run --epochs 1

    - name: Run model validation
      run: |
        python scripts/evaluate.py --model-path models/checkpoints/test_model.pth --test-data

  # Frontend Tests
  frontend-test:
    runs-on: ubuntu-latest
    needs: quality-check
    steps:
    - uses: actions/checkout@v3

    - name: Set up Node.js
      uses: actions/setup-node@v3
      with:
        node-version: '18'
        cache: 'npm'
        cache-dependency-path: frontend/package-lock.json

    - name: Install dependencies
      run: |
        cd frontend
        npm ci

    - name: Run linting
      run: |
        cd frontend
        npm run lint

    - name: Run type checking
      run: |
        cd frontend
        npm run type-check

    - name: Run tests
      run: |
        cd frontend
        npm test -- --coverage --watchAll=false
      env:
        CI: true

    - name: Build application
      run: |
        cd frontend
        npm run build

    - name: Upload build artifacts
      uses: actions/upload-artifact@v3
      with:
        name: frontend-build
        path: frontend/build/

  # Security Scan
  security-scan:
    runs-on: ubuntu-latest
    needs: [backend-test, frontend-test]
    steps:
    - uses: actions/checkout@v3

    - name: Run Trivy vulnerability scanner
      uses: aquasecurity/trivy-action@master
      with:
        scan-type: 'fs'
        scan-ref: '.'
        format: 'sarif'
        output: 'trivy-results.sarif'

    - name: Upload Trivy scan results
      uses: github/codeql-action/upload-sarif@v2
      if: always()
      with:
        sarif_file: 'trivy-results.sarif'

  # Build and Push Docker Images
  build-and-push:
    runs-on: ubuntu-latest
    needs: [backend-test, model-test, frontend-test, security-scan]
    if: github.event_name == 'push' && (github.ref == 'refs/heads/main' || github.ref == 'refs/heads/develop')

    steps:
    - name: Checkout code
      uses: actions/checkout@v3

    - name: Set up Docker Buildx
      uses: docker/setup-buildx-action@v2

    - name: Log in to Container Registry
      uses: docker/login-action@v2
      with:
        registry: ${{ env.REGISTRY }}
        username: ${{ github.actor }}
        password: ${{ secrets.GITHUB_TOKEN }}

    - name: Extract metadata for backend
      id: meta-backend
      uses: docker/metadata-action@v4
      with:
        images: ${{ env.REGISTRY }}/${{ env.BACKEND_IMAGE }}
        tags: |
          type=ref,event=branch
          type=ref,event=pr
          type=sha,prefix={{branch}}-
          type=raw,value=latest,enable={{is_default_branch}}

    - name: Build and push backend image
      uses: docker/build-push-action@v4
      with:
        context: .
        file: ./Dockerfile.backend
        push: true
        tags: ${{ steps.meta-backend.outputs.tags }}
        labels: ${{ steps.meta-backend.outputs.labels }}
        cache-from: type=gha
        cache-to: type=gha,mode=max

    - name: Extract metadata for frontend
      id: meta-frontend
      uses: docker/metadata-action@v4
      with:
        images: ${{ env.REGISTRY }}/${{ env.FRONTEND_IMAGE }}
        tags: |
          type=ref,event=branch
          type=ref,event=pr
          type=sha,prefix={{branch}}-
          type=raw,value=latest,enable={{is_default_branch}}

    - name: Build and push frontend image
      uses: docker/build-push-action@v4
      with:
        context: ./frontend
        push: true
        tags: ${{ steps.meta-frontend.outputs.tags }}
        labels: ${{ steps.meta-frontend.outputs.labels }}
        cache-from: type=gha
        cache-to: type=gha,mode=max

  # Deploy to Staging
  deploy-staging:
    runs-on: ubuntu-latest
    needs: build-and-push
    if: github.ref == 'refs/heads/develop'
    environment: staging

    steps:
    - name: Checkout code
      uses: actions/checkout@v3

    - name: Configure kubectl
      uses: azure/k8s-set-context@v3
      with:
        method: kubeconfig
        kubeconfig: ${{ secrets.KUBE_CONFIG_STAGING }}

    - name: Deploy to staging
      run: |
        kubectl apply -f infrastructure/kubernetes/namespace.yaml
        kubectl apply -f infrastructure/kubernetes/configmaps.yaml
        kubectl apply -f infrastructure/kubernetes/storage.yaml
        kubectl apply -f infrastructure/kubernetes/deployments.yaml
        kubectl apply -f infrastructure/kubernetes/services.yaml
        kubectl set image deployment/emotia-backend emotia-api=${{ env.REGISTRY }}/${{ env.BACKEND_IMAGE }}:develop
        kubectl set image deployment/emotia-frontend emotia-web=${{ env.REGISTRY }}/${{ env.FRONTEND_IMAGE }}:develop
        kubectl rollout status deployment/emotia-backend
        kubectl rollout status deployment/emotia-frontend

  # Deploy to Production
  deploy-production:
    runs-on: ubuntu-latest
    needs: build-and-push
    if: github.event_name == 'release'
    environment: production

    steps:
    - name: Checkout code
      uses: actions/checkout@v3

    - name: Configure kubectl
      uses: azure/k8s-set-context@v3
      with:
        method: kubeconfig
        kubeconfig: ${{ secrets.KUBE_CONFIG_PRODUCTION }}

    - name: Deploy to production
      run: |
        kubectl apply -f infrastructure/kubernetes/namespace.yaml
        kubectl apply -f infrastructure/kubernetes/configmaps.yaml
        kubectl apply -f infrastructure/kubernetes/storage.yaml
        kubectl apply -f infrastructure/kubernetes/deployments.yaml
        kubectl apply -f infrastructure/kubernetes/services.yaml
        kubectl apply -f infrastructure/kubernetes/scaling.yaml
        kubectl set image deployment/emotia-backend emotia-api=${{ env.REGISTRY }}/${{ env.BACKEND_IMAGE }}:${{ github.event.release.tag_name }}
        kubectl set image deployment/emotia-frontend emotia-web=${{ env.REGISTRY }}/${{ env.FRONTEND_IMAGE }}:${{ github.event.release.tag_name }}
        kubectl rollout status deployment/emotia-backend --timeout=600s
        kubectl rollout status deployment/emotia-frontend --timeout=300s

    - name: Run post-deployment tests
      run: |
        # Wait for services to be ready
        sleep 60
        # Run smoke tests
        curl -f https://api.emotia.example.com/health || exit 1
        curl -f https://emotia.example.com/ || exit 1

  # Performance Testing
  performance-test:
    runs-on: ubuntu-latest
    needs: deploy-staging
    if: github.ref == 'refs/heads/develop'

    steps:
    - name: Checkout code
      uses: actions/checkout@v3

    - name: Run k6 performance tests
      uses: k6io/action@v0.1
      with:
        filename: tests/performance/k6-script.js
      env:
        K6_API_URL: https://api-staging.emotia.example.com

    - name: Generate performance report
      run: |
        # Generate and upload performance metrics
        echo "Performance test completed"

  # Model Performance Regression Test
  model-regression-test:
    runs-on: ubuntu-latest
    needs: model-test
    if: github.event_name == 'pull_request'

    steps:
    - name: Checkout code
      uses: actions/checkout@v3

    - name: Download baseline model
      uses: actions/download-artifact@v3
      with:
        name: baseline-model
        path: models/baseline/

    - name: Run regression tests
      run: |
        python scripts/evaluate.py \
          --model-path models/checkpoints/latest_model.pth \
          --baseline-path models/baseline/model.pth \
          --regression-test \
          --accuracy-threshold 0.95 \
          --latency-threshold 1.2

  # Documentation
  docs:
    runs-on: ubuntu-latest
    needs: [backend-test, frontend-test]

    steps:
    - name: Checkout code
      uses: actions/checkout@v3

    - name: Generate API documentation
      run: |
        cd backend
        python -m pydoc -w ./
        # Generate OpenAPI spec
        python scripts/generate_openapi.py

    - name: Deploy documentation
      uses: peaceiris/actions-gh-pages@v3
      if: github.ref == 'refs/heads/main'
      with:
        github_token: ${{ secrets.GITHUB_TOKEN }}
        publish_dir: ./docs